I very rarely post to Facebook but I do feel that I know who my data is shared with when I do. They seem to have stopped their ridiculous habit of resetting all my privacy settings to public now as well.
Like Google I imagine they do actually try to protect the data they have beyond what I explicitly share at least to the extent it's not sold (I'm assuming they use the same model as Google and sell ads from the data instead of just selling the data, but their ads are so badly targeted it's hard to tell).
That said I don't see myself giving them financial details because I don't really know what they do with data that's not explicitly shared by users (which like I said has become a lot clearer) and I don't really particularly trust them. Plus I'd be amazed if they ever managed to show an ad I was remotely interested in.
Like Google I imagine they do actually try to protect the data they have beyond what I explicitly share at least to the extent it's not sold (I'm assuming they use the same model as Google and sell ads from the data instead of just selling the data, but their ads are so badly targeted it's hard to tell).
That said I don't see myself giving them financial details because I don't really know what they do with data that's not explicitly shared by users (which like I said has become a lot clearer) and I don't really particularly trust them. Plus I'd be amazed if they ever managed to show an ad I was remotely interested in.